The best one is the one that you like the best..... The Strand is a perf captoe shortwing hybrid and the McAllister is a traditional shortwing. If you search the AE website using wingtip there are even more options available than you listed, including the MacNeil which is a LWB. Limiting it to your 2 choices I have the Strand in walnut shell and McAllister in walnut calf. There is also the shell version of the McAllister, the Cambridge, which I have in burgundy shell. In my mind that one is the flagship of the wingtip fleet and the one that I consider "best" wingtip that AE has to offer.
Once again, I thank you very much for the insight! And do appreciate your knowledge.